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A method of laser-friction stir welding diamond tools

A diamond tool and friction stir technology, which is applied in laser welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of diamond thermal damage, graphitization, etc., and achieve the effect of improving the bonding strength of the interface and being environmentally friendly

Active Publication Date: 2018-10-19
CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of diamond thermal damage and graphitization in the process of welding diamond tools, and improve the bonding strength of metal bond and diamond abrasive grain interface

Method used

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  • A method of laser-friction stir welding diamond tools
  • A method of laser-friction stir welding diamond tools
  • A method of laser-friction stir welding diamond tools

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Embodiment Construction

[0026] The following will be combined with Figure 1-3 The technical solution of the present invention will be described in detail along with specific embodiments.

[0027] Such as figure 1 As shown, the substrate of the diamond workpiece is 45 steel, and the metal bond is nickel-based solder. The laser beam is vertically incident on the upper surface of the metal bond powder to realize the connection between the metal bond powder and the substrate. At the same time, the friction stir welding system behind the laser beam Stirring is used to stir the solidified brazing seam, and simultaneously inject diamond abrasive grains into the friction stir welding pool to realize the solid phase connection between diamond abrasive grains and metal bond.

[0028] In this embodiment, the method for laser-friction stir welding a diamond tool includes the following steps.

[0029] Step 1: Preparing the substrate 1 of the diamond tool by mechanical processing, derusting, polishing and grind...

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Abstract

The invention relates to a laser-friction stir welding method for a diamond tool. The method comprises the following steps that 1, a matrix is prepared; 2, coating is conducted on metallic bond powder; 3, a diamond abrasive grain injection system is provided; 4, diamond abrasive grains are prepared; 5, a laser welding system is provided; 6, a friction stir welding system is provided; 7, the metallic bond powder and the matrix are subjected to laser welding; 8, the friction stir welding system is started, solidified brazing seams are stirred by a pin , and the diamond abrasive grains are injected to a friction stir welding pool at the same time; and 9, a laser welding head and a stirring head move synchronously, and the welding process is completed. According to the laser-friction stir welding method, a mode of combining laser welding with friction stir welding is adopted, solid-phase joining of the diamond abrasive grains and metallic bond is achieved, and hot burning loss and graphitization of the diamond abrasive grains pre-arranged during traditional brazing welding are avoided.

Description

technical field [0001] The present invention relates to a method for processing a diamond tool, in particular to a method for friction stir welding a single-layer diamond tool. Background technique [0002] In recent years, diamond tools have been widely used in industrial production. Most of the new diamond tools are single-layer welded diamond tools. It uses high temperature to make the metal bond powder diffuse and metallurgically react between the diamond abrasive grains and the matrix metal, thus obtaining The excessive layer rich in carbides solves the problem that the diamond abrasive grains of traditional single-layer electroplating or multi-layer sintered diamond tools are only mechanically wrapped, improves the holding force of the matrix to the diamond grains, and fundamentally improves abrasives, bonds, The bonding strength between the three substrates. Compared with traditional single-layer electroplated tools, welding tools have obvious advantages in terms of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/346B23K26/60
CPCB23K26/346B23K26/60
Inventor 张明军唐昆张健毛聪胡永乐
Owner CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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